87102394 has 4 divisors (see below), whose sum is σ = 130653594. Its totient is φ = 43551196.

The previous prime is 87102383. The next prime is 87102437. The reversal of 87102394 is 49320178.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77211369 + 9891025 = 8787^2 + 3145^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21775597 + ... + 21775600.

Almost surely, 2^87102394 is an apocalyptic number.

87102394 is a deficient number, since it is larger than the sum of its proper divisors (43551200).

87102394 is a wasteful number, since it uses less digits than its factorization.

87102394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43551199.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 87102394 is about 9332.8663335548. The cubic root of 87102394 is about 443.2785302952.

The spelling of 87102394 in words is "eighty-seven million, one hundred two thousand, three hundred ninety-four".